TR - RE - CCSD - FO - 1001 -3 July 13, 1967 PRESSURE TRANSDUCER Giannini Controls Corporation Part Number 461319 NRSA Drawing Number 75M51731-8-2000 Ward copy (HC) Microfiche (M F) ff 853 July 65 1 (ACCESSION NUMBER) (THRU) / I e > /u / t: (PAGES) r! 4 lb (C~EGORY~ ez ~777~ (NZSA CR OR TMX OR AD NUMBER)
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TR-RE-CCSD -FO -1001 -3
July 13, 1967
PRESSURE TRANSDUCER
Giannini Controls Corporation Part Number 461319
NRSA Drawing Number 75M51731-8-2000
Ward copy (HC)
Microfiche (M F)
ff 853 July 65
1
(ACCESSION NUMBER) (THRU)
/ I e > / u / t: (PAGES) r! 4 lb
( C ~ E G O R Y ~ ez ~ 7 7 7 ~
(NZSA CR OR TMX OR AD NUMBER)
TR-RECCSD-FO-1001-3 5
TEST REWRT
FOR
PRESSURE TRANSDUCER
G i a n n i n i Controls Corporation Part Number 461319
NASA Drawing Number 75M51731-8-2000
ABSTRACT
This report presents the r e s u l t s of tests performed on 3 specimens of Pressure Transducer 75M51731-8-2000. The following tests were performed:
1. Receiving Inspection 2. Proof Pressure 3. Sea l Leakage 4. Functional 5. Low Temperature 6, High Temperature 7. Vibration
8. Humidity 9. S a l t Fog 10. Sand and Dust 11. Ekplosion 12. Cycle 13. Burst Pressure
.
The maximum pressure which could be measured by specimens 1, 2, and 3 was 1965, 2005, and 2005 psig, respectively,
The t o t a l output resis tance of the specimens was out of tolerance during t h e low and high temperature t e s t s and t h e measured ca l ibra t ion not a l l within t h e maximum s t a t i c e r ro r band.
points were
Maximum degradation occurred a t approximately 900 cps during each of the vibrat ion s inusoidal sweep tests, a l l within the maximum s t a t i c e r ro r band a f t e r the vibrat ion tests.
The measured ca l ibra t ion points were not
The output voltage of specimens 2 and 3 began t o f luc tua te between 900 and 1100 psig a f t e r 500 cycles of the cycle t e s t , c i r c u i t ) a t 985 psig a f t e r t h e cycle tes t .
There was no output (open
I
TR-RE-CCSD -F0-1001-3
TEST R3PORT
FOR
PRESSURE TRANSDUCER
Giannini Controls Corporation P a r t Number 461319
NASA Drawing Number 75M51731-8-2000
July 13, 1967
CHFlYSLER CORPORATION SPACE D I V I S I O N - NEW OBLWGiS, LOUISIANA
The tests reported herein were conducted f o r t h e John F. Kennedy Space Center by Chrysler Corporation Space Division (CCSD) , New Orleans, Louisiana. This document was prepared by CCSD under contract NAS 8-4016, P a r t VII, CWO 271620.
ii
TABLE OF CONTENTS
Section
I
I1
I11
V
V I
VI1
V I 1 1
IX
X
X I 1 1
X I V
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . RF,CEIVING I N S P E C T I O N . . . . . . . . . . . . . . . . . . PROOF PRF,SSURE TEST . . . . . . . . . . . . . . . . . . SEAL LEAKAGE TEST . . . . . . . . . . . . . . . . . . . FUNCTIONAL T E S T . . . . . . . . . . . . . . . . . . . . LOW TEMPERATURE TEST . . . . . . . . . . . . . . . . . . HIGH TEMPERATURE TEST . . . . . . . . . . . . . . . . . V I B R A T I O N T E S T . . . . . . . . . . . . . . . . . . . . . HliMTDITY TEST . . . . . . . . . . . . . . . . . . . . . S A L T FOG TEST . . . . . . . . . . . . . . . . . . . . . SAND AND DUST TEST . . . . . . . . . . . . . . . . . . . E X P L O S I O N T E S T . . . . . . . . . . . . . . . . . . . . . CYCLE TEST . . . . . . . . . . . . . . . . . . . . . . . BURST PRESSURE TEST . . . . . . . . . . . . . . . . . .
1-1
2-1
3-1
4-1
5-1
6-1
7-1
8-1
9-1
10-1
11-1
12-1
13-1
14-1
iii
LIST OF ILLUSTRATIONS
Figure PaRe FRONTISPIECE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
3 -1 PROOF PRESSURE AND BURST TEST SCHEMATIC . . . . . . . . . 3-1
4-1 SEAL LEAKAGE TEST SETUP . . . . . . . . . . . . . . . . . 4-2
5. 1. FUNCTIONAL TEST SCHEMATIC . . . . . . . . . . . . . . . . 5-6
5 -2 PRESSURE TRANSDUCER ELECTRICAL SCHEMATIC . . . . . . . . 5-6
5 -3 RESPONSE TIME TEST SCHENATIC . . . . . . . . . . . . . . 5-7
5-4
5-5
5 -6
6 -1
6 -2
7-1
7 -2
8-1
8-2
8-3
8-4
8-5
9-1
9 -2
10 -1
10 -2
11-1
11-2
11 -3
12-1
I N I T I A L FUNCTIONAL TEST LINEARITY (SF'l3CIMEN 1) . . . . . 5-8
INITIAL FUNCTIONAL TEST LINEARITY (SPECIMEN 2 ) . . . . . 5-9
I N I T I A L FUNCTIONAL TEST LINEARITY (SPECIMEN 3) . . . . . 5-10
. . . . . . . LOW TEMPERATURE TEST LINEARITY (SPECIMEN 1) 6-5
LOW TEMPERATURE; TEST LINEARITY (SPECIMEN 2 ) . . . . . . . 6-6
HIGH TEMPERATURE TEST LINEARITY (SPECIMEN 2) . . . . . . 7-5
HIGH TEMPERATURE TEST LINEARITY (SPECIMEN 3) . . . . . . 7-6
AXES OF VIBRATION . . . . . . . . . . . . . . . . . . . . 8-12
VIBRATION TEST LINEARITY (SPECIMEN 2) . . . . . . . . . . 8-13
VIBRATION TEST LINEARITY (SPECIMEN 3 ) . . . . . . . . . . 8-14
TYPICAL RANDOM EQUALIZATION PLOT (SPECIMENS 2 & 3. X-AXIS) 8-15
VIBRATION TEST SETUP (Y-AXIS) . . . . . . . . . . . . . . 8-16
HUMIDITY TEST LINEARITY (SPECIMEN 1) . . . . . . . . . . 9-5
HUMIDITY TEST LINEARITY (SPECIMEN 2 ) . . . . . . . . . . 9-6
SALT FOG TEST LINEARITY (SPECIMEN 1) . . . . . . . . . . 10-5
SALT FOG TEST LINEARITY (SPECIMEN 2) . . . . . . . . . . 10-6
SAND AND DUST TEST LINEARITY (SPECIMEN 2) . . . . . . . . 11-5 SAND AND DUST TEST LINEARITY (SPECIMEN 3) . . . . . . . . 11-6
SAND AND DUST TEST SETUP . . . . . . . . . . . . . . . . 11-7 EXPLOSION TEST LINEARITY (SPECIMEN 1) . . . . . . . . . . 12-4
LIST OF I L L U S T R A T I O N S (CONTINUED)
Figure
13 -1
13 -2
13 -3
13 -4
13 -5
Table
3 -1
4-1
5 -1
5 -2
6-1
6 -2
7 -1
7 -2
8-1
8-2
8-3
8-4
8-5
8-6
8-7
8-8
Page
CYCLE TEST SCHEXATIC . . . . . . . . . . . . . . . . . . 13-8
CYCLE TEST L I N E A R I T Y (SPECIMEN 1) . . . . . . . . . . . . 13-9
C Y C U TEST LINEARITY (SPECIMEN 2) . . . . . . . . . . . . 13-10
CYCLE TEST L I N E A R I T Y (SPECIMEJI 3) . . . . . . . . . . . . 13-11
CYCLE TEST S E T U P . . . . . . . . . . . . . . . . . . . . 13-12
LIST O F TAEiL;ES
Page
PROOF P E 3 S S U I B TEST EQUIPMEnrr LIST . . . . . . . . . . . 3-2
S E A L LEAKAGE TEST EQUIPMENT LIST . . . . . . . . . . . . 4-1 FUNCTIONAL TEST EQUIPMENT LIST . . . . . . . 4 . . - 5-4
I N I T I A L FUNCTIONAL TEST DATA . . . . . . . . . . . . . - 5-5
LOW TEMPERATURE TEST FUNCTIONAL DATA FOR S P E C I M E N 1 . . . 6-3
LOW "ENPERATURE TEST FUNCTIONAL DATA FOR S P E C I M E N 2 . . . 6-4 H I G H TEMPERATURE: TEST FUNCTIONAL DATA FOR S P E C I M E N 2 . . 7-3
HIGH TEMPERATURE TEST FUNCTIONAL DATA FOR S P E C I M E N 3 . . 7-4
ONE-THIRD OCTAVE CENTER FREQUENCIES . . . . . . . . . . . 8-3
S I N U S O I D A L SWEEP I N P U T LEVELS . . . . . . . . . . . . . . 8-4
SPECIITEN 2 L I N E A R I T Y DURING X-AXTS RESONANT FFBQUENCY S W E E P . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
SPECIMEN 3 L I N E A R I T Y DURING X-AXTS m S O N A N T FREQUENCY S w E ; E p . . . . . . . . . . . . . . . . , . . . . . . . . . . 8-6
S P E C I M E N 2 L I N E A R I T Y DURING Y-AXTS RESONANT FREQUENCY S W E E P . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
S P E C I M E N 3 L I N E A R I T Y DURING Y-AXIS RICSONANT FREQUENCY SwE;Ep.......................... 8-8
V I B R A T I O N FUNCTIONAL TEST DATA FOR S P E C I M E N 2 . . . . . . 8-9
V I B R A T I O N FUNCTIONAL TEST DATA FOR SrEGIiviZJ 3 . . . . . . 8-10
LIST O F TABLES (CONTINUED)
Tab l e
8-9
9 -1
9 -2
10 -1
10 -2
11-1
11-2
12-1
13 -1
13 -2
13 -3
13 -4
13 -5
Page
R E P E A T A B I L I T Y O F TEST SPECIMENS DURING V I B R A T I O N FUNC- T I O N A L T E S T S . . . . . . . . . . . . . . . . . . . . 8-11
HUMIDITY TEST FUNCTIONAL DATA FOR S P E C I M E N 1 . . . . . . 9-3
HUMIDITY TEST FUNCTIONAL DATA FOR S P E C I M E N 2 - . - * 9-4
S A L T FOG TEST FUNCTIONAL DATA FOR S P E C I M E N 1 . . . . 10-3
SALT FOG TEST FUNCTIONAL DATA FOR SPECIMEN 2 . . . . . 10-4 SAND AND DUST TEST FUNCTIONAL DATA FOR SPECIMEN 2 . . . . 11-3
SAND AND DUST TEST FUNCTIONAL DATA FOR SPECIMEN 3 . . . . 11-4 EXPLOSION TEST FUNCTIONAL DATA FOR SPECIMEN 1 . . . . . . 12-3
CYCLE TEST EQUIPMENT LIST - 13-3
- 13-4 CYCI.3 TEST FUNCTIONAL DATA FOR S P E C I M E N 1 . . . . . . . CYCLE T E S T FUNCTIONAL DATA FOR SPECIMEN 2 . . . . . . . . 13-5 CYCLE TEST FUNCTIONAL DATA FOR SPECIMEN 3 . . . . . . . - 13-6
R E P E A T A B I L I T Y OF SPECIMENS DURING CYCLE TEST FUNCTIONAL T E S T S . . . . . . . . . . . . . . . . . . . . . . . . .13-7
vi
i v i i
CHECK SHEET
FOR
PRESSURE TRANSDUCER
MANUFACTURER : Giannini Controls Corporation, Pasadena, California MA"ACTURER1S PART NUMBER: 461319
TESTING AGENCY: Chrysler Corporation Space Division, New Orleans, Louisiana AUTHORIZING AGENCY: NASA KSC
NASA PART NUMBER: 7951731-8-2000
I. FUNCTIONAL RFQUIJXEMENTS
A. B. C.
D . E. F. G.
OPERATING MEDIA: D r y a i r , gaseous ni t rogen OPERATING PRESSURE: 2000 psig T;EAKAGFl: 3.26 x cc He/sec/inch of s e a l m a x i m u m
a t a pressure d i f f e r e n t i a l of 1 atmosphere PROOF PRESSURE: 3000 psig BURST PRFSSURE: 5000 ps ig OPERATING RANGE: POWER RATING: 0.5 w a t t continuous
0 t o 2000 psig
11. CONSTRUCTION, MECHANICAL
A. PRESSUREEIJQENT: Bourdon tube, h e l i c a l B. PNEUMATIC CONNECTION: MC172-4 style-E C. WEIGHT: 0.3 pound
111. CONSTRUCTION, ELECTRICAL
A. CO"J3CTOR: B. RFSISTANCE:
Cannon GSO2-1OSL-3P-001, hermetically sealed Potentiometer, 2000 ohms 25% m a x i m u m a t 68OF
I V . ENVIRONMENTAL CHARACTERISTICS - MANUFACTURER'S SPECIFICATIONS
TEXPERATURE RANGE: -65 t o 200°F
V. LOCATION AND USE
A . LOCATION:
B. USE:
Saturn I B GSE, LC 34 and LC 37, Apollo Access Arm, S/A 1, 2, 3, 4, LE24 Hydraulic Accumulator pressure ind ica tor
v i i i
ikvironment
Receiving Inspection
. .
Proof Pressurc Test
Seal Leakage Test
Functional Test a. Insulatioi
Resis tanc c
b. Total Re- s is tance and Wiper Range
c. Leakage Check
1. Response Time
S - Sat i s fac tory U ‘- Unsatisfactory
TEST SUMMARY
PRESSURE TRANSDUCER 7’jM’j1731-8-2000
Operat ion&: Boundary
V i s u a l in- spection
3000 psig f o r 5 minutes . using hydraulic f lu id
Pressure d i f- f e r e n t i a l of 1 a t mo s ph e r e
250 vdc applied between pins A, 33, C and case
Measure r e s i s t - ance between pins A and C, A and B a t 0 psig, and A and B a t 2000 psia
Apply leak chec solut ion wi th specimens pres- surized a t 2000 P@-a
Apply 5 vdc t o pins A and C; measure time r e quired f o r out- put. a t A and B to reach 63 per cent of f inal 3ut put
3
To determine i f specimens conform with applicable drawings and speci-
Insulat ion resis tance not l e s s than 20 megohms
Resistance between i . and C s h a l l be 2000 (2100) ohms; Resist- mce between A and E a t 2000 psia s h a l l b e 97 t o 100 percent o f t o t a l resis tance
No leakage of t e s t specimens
53 percent of final mtput a t 500, 1000, 1500, and 2000 in less than 5 seconds
S
S
S
S
ix
Remarks
TEST SUMMARY (CONTINUED)
PRESSURE TRANSDUER 7!jM'j1731-8-2000
Operat iond. Test ikvirorunent [!;:its Boundary Objective
e. Lineari ty
f . Hysteresi
g. Repeatabi
Low Tempera- ture Test
.
1,2,3 Pressurize t h e specimens and measure t h e out put a t cal ibra- t i o n points between 0 t o 1985 t o 0 psig
All ca l ib ra t ion points within f-1
-percent of a strail l ine between measux end points
1,2,3 Pressyrize the Sha l l not exceed 2. specimens and percent of t h e f u l l measure t h e out--scale output measui put a t cal ibra- a t 1985 psig t i o n points between 0 t o 1985 t o 0 psig
specimens from 0 t o 1985 t o 0
measure output a t ca l ib ra t ion points
5"F, perform a functional t es t a t low tempera- ture , and r e tun t o ambient con- di t ions
Difference between 'any s ing le output reading and t h e laverage reading sha 'not exceed 0.8 per- cent
-_ - __ - __ - -
Determine operatine a b i l i t y a t low temr t u r e and af ter re- turning t o ambient
F and s t a b i l i z e perform func-
l ib ra t ion Test
U - Unsatksfactory 1 X
Test Results
S
S
U
S
U a-
- .. .-
U
S
Zenarks
: :: r!
* - ? ?
-
Repeatabil i ty and l i n e a r i t y out of to le ran readings
---__ _ _ _ ._
Repeatabil i ty and l i n e a r i t y out of to leran readings
3.viroiiment
1. Sinusoida Search
:. Sinusoida Sweep
I . Random Excitatioi
‘umidity Test
TEST SUMMARY
PRESSURX TRANSDUCER 7p51731-8-2000
Operational Test %its Boundary Objective
i b r a t e speci- . mens a t 1/3
octave center frequencies; i n crease input l e v e l u n t i l vol age f luctuat ion o r specif ied maximum’level i . at ta ined
Determine t he highe input l e v e l a t whic voltage f luc tua t ion . w i l l not occur, w i t i n t h e specified - limits
Vibrate speci- subject t h e spec mens f o r 15 ns t o t he highest minutes a t leve possible l eve l s specif ied by a t h i n specified t e s t envelope mits, a t which no derived from t h I t age f luctuat ion sinusoidal sea r
Vibrate speci- mens f o r 5 minutes increas ing t h e input l eve l u n t i l voltage f luctua t i o n occurs o r u n t i l a maximum, input l e v e l o f I 3.2g2/cps i s at4 ta ined I
ambient dur i
iod maintain
t i o n o r dete.
Test Results
S
S
U
U
Remarks
Repea,: i t y and linear$$yt out o f toleyap readings durin functional t e s
Repeatability znd l i n e a r i t y mt of to le ran readings
S - Sat isfactory U - Unsatisfactory
J xi
TEST SUMMARY (CONTINUED)
PRESSURE TRANSDUCER 7w51731-8-2000
.
3 500 fpm; 2 hour I a t 77°F and 2 hours a t 160°F
hplos ion Test 1 32 percent by Operate specimen i n volume hydrogen explosive atmosphere 160°F a t 13.1 P a
Pressurize the Determine t h e effect specimens from of continuous opera- 0 t o 1985 t o 0 psig f o r 80,000 performance cycles of oDera+.
t i o n on specimen
hydraulic f l u i d
Leakage rate s h a l l not exceed 3.26 x lo4 cc of helium/ second/inch of seal
Maintain pressure f 5 minutes with no evidence of crackin
Test Result3
U
S
U
U
S
S
U - Unsatisfactorg
i xii
Remarks
Out of to lera ( l i n e a r i t y )
- ~ - Repeatabili ty and l i n e a r i t y out of tolera: readings
Repeatabili ty out of t o l e r a readings .
- -
3epeatabili ty md l i n e a r i t y )ut of tolerar readings
iepeatabi l i ty )ut of tolerar ?eadings
e
3 .
?
!
i J c
SECTION I
INTRODUCTION
1.1
This repor t presents t he r e su l t s of tests t h a t were performed t o determine i f Pressure Transducer 75M51731-8-2000 meets t h e operational and environmental requirements of t h e John F. Kennedy Space Center. on pages ix through xii.
A summary of t h e tes t r e s u l t s i s presented
1.2
1.2.1
1.2.2
1.3
ITEM DESCRIPTION
Three specimens of Pressure Transducer ?!jM51731-8-2000 were tes ted. Corp. as vendor part number 461319. within a range of 0 t o 2000 psia and i s of t he potentiometric type with a res is tance of 2000 ohms.
The transducers are manufactured by Giannini Controls The transducer operates
The transducer i s mounted by means of a square f lange s imilar t o t h a t used on a box type e l e c t r i c a l receptacle. The trans- ducer w i l l be used primarily i n t h e swing arm system and ac- cess arm system on Launch Complex 34 and 37.
AF’PLI CeBLE DOCUMENTS
The following documents contain t h e t e s t requirements f o r Pres- sure Transducer 75M51731-8-2000:
a. KSC-STD-l64(D) Standard Environmental Test Methods f o r Ground Support Equipment In s t a l l a t i ons a t Cape Kennedy
b. NASA Drawing 75M51731-8-2000
c. Test Plan CCSD-FO-1001-lRp Revision C
1.4 SPECIMEN ASSIGNPIENT NUMBERS
The specimen assignment numbers are as follows:
Specimen S e r i a l Number
1 . 278-8
2 2’78-10
3 278-13
1-1
S E C T I O N I1
2.1
2.2
2.3
R E C E I V I N G I N S P E C T I O N
TEST R E Q U I m N T S
Each specimen s h a l l be visually and dimensionally inspected f o r conformance with the applicable spec i f ica t ions p r i o r t o tes t ing .
T E S T PROCEDURE
' A v isual and dimensional inspect ion was performed t o determine compliance w i t h NASA drawing 75M51731-8-2000, and t o the ap- pl icable vendor drawings, t o t he extent possible without d is- assembly of t h e tes t specimens. A t t h e same t i m e , each tes t specimen w a s a l so inspected f o r poor workmanship and manufacturing defects .
TEST RESULTS
The specimens were found t o conform with a l l appl icable drawings and specif icat ions.
2-1
c
3.1
3.1.1
3 -1.2
3.2
3.'2.1
3.2.2
3.2.3
3 03
SECTION I11
PROOF PRESSURE TEST
TEST REQUIREMENTS
The test specimens shall be pressurized to 3000 psig for 5 minutes using hydraulic fluid MIL-H-5606 as the test medium.
The test specimens shall be inspected for leakage and external damage e
TEST PROCEDURE
The test setup was assembled as shown in figure 3-1, using the equipment listed in table 3-1.
Each specimen was pressurized to 3000 psig and maintained for 5 minutes.
The specimen was depressurized and removed from the test setup and inspected for damage.
TEST RESULTS
There was no leakage of the test specimens, and there was no evidence of internal or external damage.
3-1
3
I
- 1 I I I I
Figure 3-1. Proof Pressure and Burst Test Schematic
Table 3-1. Proof Pressure Test Equipment L i s t
1 Item N o ,
1 Test Specimen
2 Pressure Gage
3 Hydraulic Hand P U P
4 Burst Chamber
Manufacturer
Giannini Control: Corp.
Duragauge
Pine, Inc.
C S D
Model/ P a r t N o .
461319
NA
1-60 -3
NA
S e r i a l N o .
278-8, 278-10, 278-13
5-122’78
NA
NA
Remarks
Pressure Transduce
0-to 5000-psig 5 . 5 % FS Cal date 3-10-67
5000 p s i
Burst tes t only
3 -2 1
SECTION IV
SEAL LEAKAGE TEST
TEST REQUIlBMEWS 4.1
4.1-1 The s e a l leakage r a t e s h a l l not exceed 3.26 x lo4 cc of helium/ second/inch of s e a l a t a pressure d i f f e r e n t i a l of one atmosphere.
The s e a l leakage t e s t s h a l l be performed before the i n i t i a l funct ional t e s t and following the cycle t e s t (sect ion XrII ) .
4.1.2
4.2 TEST PIZOCEDW
4.’2.1 The t e s t specimen was placed i n vacuum chamber 3 and t h e chamber was then evacuated t o maximum vacuum.
4.2.2 Helium was applied t o the i n l e t of the t e s t specimen t o c rea te a d i f f e r e n t i a l pressure o f one atmosphere between the specimen and the vacuum chamber.
4.2.3
4.2.4
4.3
- Item No. - 1
2
3
4
5
6 I__
Mass spectrometer 2 was used t o measure helium leaking from the t e s t specimen.
The vacuum chamber was returned t o ambient conditions and t h e t e s t specimen was removed.
TEST RESULTS
The s e a l leakage was l e s s than 3.26 x lom8 cc of helium/second/ inch of s e a l f o r each t e s t specimen.
Table 4-1. Sea l Leakage Test Equipment E s t
It em
Test Specimen
Mass Spectrometer
Small Vacuum Chamber
Pressure Gage
Pressure Regulator
Helium Supply
14anuf acturer
Giannini Controls Corp.
mco CCSD
Wallace-Tierman
Oxweld
NA
Nod e l / ‘ar t iJo.
461319
Ms-9AB
NA
FA-3.45
EA-3 50
NA
S e r i a l No.
278-8, 278-10, 278-13
012470
NA
JJl0235
NA
NA
Remarks
Pressure Transducer
15 p s i
4-1
t: R
SECTION V
FUNCTIONAL TEST
5.1
5.1.1
5.1.2
5.i.3
5.1.4
5.105
5.1.6
501.7
5.1.8
5 -2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
TEST REQUIREMENTS
The insu la t ion res is tance, when measured between each pin and t h e case, s h a l l not be less than 20 megohms a t 250 vdc.
The t o t a l res is tance of t h e tes t specimens, measured between pins A and C, s h a l l be 2000 (2100) ohms.
With 2000 psia pressure applied t o t h e specimen, t he r e s h a l l be no evidence of leakage when a leak detector solut ion i s used.
The res is tance measured between pins A and B (wiper range), with 2000 psia applied t o t h e pressure port , s h a l l be between 97 and 100 percent of t he t o t a l res is tance measured between pins A and C.
The response t i m e of t h e t e s t specimens s h a l l be less than 5 milliseconds f o r an output of 63 percent of t h e f i n a l reading a t 500, 1000, 1500, and 2000 psia.
The maximum s t a t i c e r ro r band ( l i n e a r i t y ) a t any ca l ib ra t ion point s h a l l be within 21 percent of a s t r a igh t l i n e between t he measured end points at zero and 1985 psig.
The repea tab i l i ty of t he output readings s h a l l be such t h a t t h e di f ference between any s ing le output reading and t h e average f o r a l l output readings of t he same input pressure, under t h e same conditions of d i rec t ion of change and environment, s h a l l not exceed 0.8 percent of the average reading.
Hysteresis s h a l l not exceed 2.5 percent of t he output reading a t 2000 psia.
TEST PROCEDURE
The tes t setup w a s assembled as shown i n f igure 5-1 using equip- ment l i s t e d i n t a b l e 5-1.
The insula t ion res is tance between each pin of J1 ( f igure 5-2) and t h e specimen case was measured by applying 250 vdc between t he pins and case.
Wheatstone Bridge 11 was connected t o pins A and C of J1 and t h e t o t a l res is tance of t he specimen w a s measured and recorded.
The specimen was checked f o r evidence of leakage by applying a leak check solut ion with 2000 psia pressure applied.
Wheatstone Bridge 11 w a s connected t o pins A and B and t he res is tance of t h e specimen a t zero ps ig w a s measured and recorded.
The pressure was increased t o 250 psia and t he res is tance was measured and recorded.
5.2.7 The pressure w a s increased t o 2000 ps ia i n 250 p s i increments and then decreased t o 250 psia in 250 p s i increments. res is tance was measured and recorded a t each incremental level .
The
The pressure was decreased t o zero ps ig and t h e res is tance was measured and recorded.
5.2.8
Paragraphs 5.2.5 through 5.2.8 were repeated 4 times f o r a t o t a l of 5 s e t s of res is tance measurements.
5.2.9
5.2.10 The response time t e s t se tup was assembled as shown i n f igure 5-3 using equipment l i s t e d i n t a b l e 5-1.
5.2.11 Power supply 9 w a s adjusted t o provide a 5 vdc po ten t ia l across pins A and C of J1.
5.2.12 Pressure was applied t o t h e t e s t specimen i n steps of 500, 1000, 1500, and 2000 psia and w a s returned t o zero a f t e r each s tep.
5.2.13 The output a t pins A and B of J1 was recorded on oscillograph 10 and t he time required t o reach 63 percent of the f i n a l out- put f o r each pressure w a s computed.
5 -3
5.3.1
TEST FESULTS
The insula t ion res is tance was greater than 20 megohms f o r a l l tes t measurements.
5.3.2 The t o t a l res is tance and wiper range of t he specimens were within t he specified tolerances.
5.3.3
5.3.4
The response time of each t e s t specimen w a s l e s s than 5 m i l l i - seconds a t 500, 1000, 1500, and 2000 psia .
The cal ibra t ion points of t h e transducers were a l l within the m a x i m u m s t a t i c e r ro r band ( l i nea r i t y ) .
The output readings were not repeatable a t 0 psig ( increasing pressure) f o r specimen 1 and 0 and 235 psig (increasing pressure) f o r specimen 2.
5.3.5
5.3.6 The m a x i m u m hysteres is of t he t e s t specimens was l e s s than 2.5 percent of t he output reading a t 2000 psia.
5 94
5.4.1
TEST DATA
The calculated and measured ca l ib ra t ion points of the t e s t specimens a r e presented i n t a b l e 5-2. for increasing pressure were calculated using t he res is tance values obtained a t 0 and 1985 psig a s end points of a s t r a igh t l i ne . The ca l ib ra t ion points for decreasing pressure were calculated using t h e res is tance values obtained a t 1735 and 0 psig a s end points,
The cal ibra t ion points
5 -2
5.4.2 Lineari ty of the t e s t specimens (0 t o 1985 psig) i s shown i n f igures 5 4 , 5-5, and 5-6.
The t o t a l res i s tance and wiper range of the t e s t specimens a r e presented i n t ab le 5-2.
I" - 5.4.3
5 -3
Table 5-1. Functional Test Equipment List
- Item No
1
-
2
3
4
5
6
7
8
9
10
11
12
13
It em
Test Specimen
GN2 Supply
Pressure Regulato:
Pressure Gage
Hand Valve
Solenoid Valve
Accumulator
Reference Trans- ducer
Transducer Excitation Supply
Oscillograph
Wheatstone Bridge
Megohm Bridge
Hand Valve
Manufacturer
Giannini Control: Corp.
NA
Grove
Seegers
Robbins
Marotta Valve Corp .
CCSD
C.E.C.
West ronics
C.E.C.
Minneapolis Honeywell
General Radio
Robbins
Model/ wt IJo
461319
NA
L ~ L H X
jS2170- 4000
2Ne250- 4T
MVlOO
NA
jG-2A
119
1071
54443
WA250- 4T
Serial No
278-8, 278-10, 278-13
NA
NA
s -1771
NA
NA
NA
3149
NA
NA
B271
3782
NA
Remarks
Pressure Trans- ducer
2000 p s i
3100 p s i
0-to L + ~ ~ ~ - p s i g 5.1% FS Cal da te 9-1-66
1/4-in.
3000 psi , 28 vdl
0 t o 5000 p s i
250 vdc
l/A-in.
5-k
Table 5-2. Initial Functional Test Data
I 5-5
2
P
5
I 3 1
..
- I- - - -
II I
12
Note: Refer t o t a b l e 5-1 f o r i t e m ident i f ica t ion . ~ l l l i n e s izes l/k-inch.
Figure 5-1. Functional Test Schematic
I
Figure 5-2. Pressure Transducer E l e c t r i c a l Schematic
9
2
All l i n e s i zes l/k-inch.
9
Figure 5-3. Response Time Test Schematic
5-7
I - 1 I I I
a cc
5-43 a
0 ' 8 2 r-
8 lA rl ' 3
I 8 a 1 8 r-l -
I
I I I l l I & I I I
L I I l l I I & I I I a i
I I s e l a
pc
I 8 E l 4
3 4
I I
C U I 3
. bn
I v\
k ic
3 5-9
P 0I d
\ \ \
\
\ \ s E-
3 P
';1 H
5-10 \
SECTION VI
LOW TEZ"ERATUFG3 TEST
6.1
6.1.1
6.1,2
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.3
6.3.1
6.3.2
6.3.3
6.3.4
TEST REQU1RF;MENTS
Test specimens l a n d 2 s h a l l be subjected t o a low temperature tes t of 5 (-4, *)OF t o determine whether t h e environment causes degradation o r de te r io ra t ion o f t h e specimens.
A functional tes t as prescribed i n sec t ion V s h a l l be performed before t he t es t ( i f more than 72 hours has elapsed s ince t h e last funct ional t e s t ) , during t h e test , and within 1 hour after s t ab i l i z a t i on a t ambient temperature after t h e t e s t . sponse time port ion of t h e functional t es t may be omitted.
The re-
TEST PROCEDURE
The t e s t specimens were placed i n t h e low temperature chamber and a l l necessary e l e c t r i c a l and pneumatic systems were con- nected.
A functional t e s t was performed as specified i n 6.1.2.
The chamber temperature was decreased a t the rate of 1°F per minute and s t ab i l i z ed a t 5 (-4, SO)OF.
A functional t es t was performed when temperature s t ab i l i z a t i on was a t ta ined. - The chamber temperature was returned t o ambient upon completion of t he functional t e s t .
The tes t specimens were v i sua l ly inspected and funct ional ly t e s t ed within 1 hour following t h e re tu rn t o ambient conditions. The response t i m e port ion of the tes t was omitted.
TEST RESULTS
The insu la t ion res is tance was grea te r than 20 megohms f o r a l l t e s t measurements.
The t o t a l res is tance of t h e t e s t specimens was below t h e speci- f i ed res is tance during t h e low temperature t e s t .
The t e s t specimens were out of to lerance ( l i nea r i t y ) during t he low temperature t e s t .
The output readings of specimen 1 were out of tolerance (repeat- a b i l i t y ) a t 0 psig ( increasing pressure) before t h e low tempera- t u r e tes t and a t 235 psig ( increasing and decreasing pressure) during t h e t e s t . ( increasing pressure) a f t e r t he tes t .
"
Specimen 2 was out o f tolerance a t 735 psig
6-1
6.3.5 The maximum hysteres is of t h e t e s t specimens was l e s s than 2.5 percent of t he output reading a t 2000 psia.
6.4 TEST DATA
6.4.1 The calculated and measured ca l ib ra t ion points of t he t e s t specimens a r e presented i n t a b l e s 6-1 and 6-2. recorded during the funct ional t e s t performed before t he low temperature t e s t were used t o calcula te t h e ca l ib ra t ion points.
Lineari ty of t he t e s t specimens (0 t o 1985 psig) i s shown i n f igures 6-1 and 6-2.
The end points
6.4.2
6.4.3 The t o t a l res is tance and wiper range of the t e s t specimens a r e presented i n t ab l e s 6-1 and 6-2.
6 -2
c
Table 6-1. b w Temperature Test Functional Data for Specimen 1
Table 6-2. Low Temperature Test Functional Data for Specimen 2
6 4
a 3
8 Qo d
I 31 d
0 r-l rl d
sz @ J 4 " E
I
I a LII
I a C U I
1
i l l I I I I l l * , I I I 1 I I 1 I I I ! ! 1 I I I I WIiO - 33KVLSIsB)f
a cy
n "
8 0. 8 4
3 3
8 4
I I I
a cv r l 4 z
I
SECTION V I 1
HIGH TE"ERATUFG3 TEST
TEST REQUIREMENTS 7 .1
7.1.1 Test specimens 2 and 3 s h a l l be sub,acted t o a high temperature t e s t of 190 (-0, +4)OF t o determine whether t h e environment causes degradation o r de te r io ra t ion of t h e specimens.
7.1.2 A funct ional tes t as prescribed i n sect ion V s h a l l be performed before t he t e s t ( i f more than 72 hours has elapsed since t h e l a s t funct ional tes t ) , during t h e t e s t , and within 1 hour a f t e r s t ab i l i z a t i on a t ambient temperature after t h e t e s t . sponse time portion of t he functional test may be omitted.
The re-
7 02 TEST PROCEDURE
The tes t specimens were placed i n t h e high temperature chamber and a l l necessary e l e c t r i c a l and pneumatic systems were con- nected.
7.2.1
A functional t e s t w a s performed on specimen 3 as specified i n 7.1.2.
7.2.2
The chamber temperature w a s increased a t t he r a t e of one degree per minute and s tab i l i zed at 160 (4, +4)OF f o r 72 hours.
7.2.3
7.2.4 The chamber temperature was increased a t t he r a t e of one degree per minute and s tab i l i zed a t 190 (4, +4)OF.
7.2.5 A functional t e s t w a s performed with t h e temperature s tab i l i zed a t 190°F.
7.2.6 The chamber temperature w a s returned t o ambient upon completion of t h e functional tes t .
The t e s t specimens were v i sua l ly inspected and functionally t es ted wi thin 1 hour following t h e re turn t o ambient conditions. The response time port ion of t h e t e s t w a s omitted.
7.3 TEST FBSULTS
The insu la t ion res is tance w a s g rea te r than 20 megohms f o r a l l t e s t measurements.
793.1
7.3.2 The t o t a l res is tance of tes t specimen 3 during t h e high tempera- t u r e t e s t w a s greater than the specif ied res is tance of 2000 (+loo) - psia .
The t e s t specimens were out of tolerance ( l i n e a r i t y ) during t he high temperature tes t . T e s t specimen 2 was out of tolerance a t 235 psig (decreasing pressure) a f t e r t he t e s t .
7.3 03
7 -1
7.3.4 The output readings of specimen 2 were out of tolerance (re- peatabil i ty ') a t 735 psig ( increasing pressure) before t h e tes t and a t 0 and 485 psig ( increasing pressure) and 0 psig (decreas- ing pressure) after t h e tes t .
The output readings of specimen 3 were out of tolerance (re- pea tab i l i ty ) a t 235 psig ( increasing and decreasing pressure) before t h e t es t and a t 235 psig (increasing pressure) a f t e r t h e t e s t .
7.3.5
7.3-6 The maximum hysteres is of t he tes t specimens w a s less than 2.5 . percent of t h e output reading a t 2000 psia.
7.4 TEST DATA
7.4.1 The calculated and measured calibratkon points of t h e t e s t specimens a r e presented i n t ab l e s 7-1 and 7-2. recorded during t h e functional t e s t performed before t h e high temperature t e s t were used t o calcula te t h e ca l ib ra t ion points.
The end points
7.4.2 Lineari ty of t he t e s t specimens (0 t o 1985 ps ig) i s shown i n f igures 7-1 and 7-2.
7.4.3 The t o t a l res is tance and wiper range o f t he t e s t specimens a re presented i n t ab l e s 7-1 and 7-2.
7-2
Table 7-1. High Temperature Test Functional Data f o r Specimen 2
Pres sure
* Out of tolerance
Table 7-2. High Temperature Test Functional Data for Specimen 3
Calibration
.
* Out of tolerance
,.
i 7-4
a 2
I I
8.1 2,
4 a 8 ri
8’ - 1 ri
I
I
1 1 1 1 I l * l I I I I I I *
a m R m
3 QD
L
I I
P
1
E 8 Qo
I I I I I I Id I I
o( a 2 5 I
I I I I
rl I
R cv rl
% I E a E
I
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7-5
I
n
J I i m $ I I I I I I I I I 1 1 1 I I
8 In rl
I I I
I I I I & I I I I I I I I f I 1 I& 1 I I I I ' 1 I I l I I I
I
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4 rn
SECTION V I 1 1
VIBRATION TESTS
8.1
8.1.1
TEST RJ3QUIREMENTS
Test specimens 2 and 3 s h a l l be subjected t o s inusoidal and random exci ta t ion t o determine the capabi l i ty of t h e specimens t o operate s a t i s f a c t o r i l y during and a f t e r v ibra t ion t e s t ing .
8.1.2 The t e s t s s h a l l be performed i n t h e axes specif ied i n f igure 8-1 and s h a l l be conducted i n accordance w i t h sec t ion 9, pro- cedure Ia of KS CSTD-164( D ) .
8.1.3 Acceleration s h a l l be measured a t t h e tes t specimen from ac- celerometers mounted on t h e specimens.
8.1.4 The t e s t specimen s h a l l be pressurized t o 1000 psia and 28 vdc s h a l l be applied t o pins A and C of J1 during t h e v ibra t ion t e s t s . The output voltage f rom pins A and B of J1 s h a l l be continuously monitored f o r voltage f luctuat ion.
8.1.5 A t t he resonant frequencies during t h e resonant frequency sweep, the t e s t specimen s h a l l be functioned a t zero psig and f r o m 250 t o 2000 psia i n 250 p s i increments. The output voltage m a x i m u m dynamic e r ro r band of any ca l ibra t ion point s h a l l be within 52 percent of a s t r a igh t l i n e between t h e measured end points a t zero and 1985 psig.
8.1.6
8.2
8.2.1
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
A funct ional t e s t s h a l l be performed p r io r t o the vibrat ion t e s t s and a t t he completion of each axis of vibrat ion. The response time portion of t he t e s t may be omitted.
TEST PROCEDURE
The t e s t specimens were i n s t a l l e d on a vibrat ion f ix tu re and the f i x t u r e was mounted on t h e vibrator . and pneumatic systems were connected.
A l l necessary e l e c t r i c a l
A funct ional t e s t w a s performed as specif ied i n 8.1.6.
The resonant frequency search was conducted while v ibra t ing t h e specimens a t l g peak from 10 t o 3000 t o 10 cps.
The s inusoidal search w a s performed while vibrat ing the t e s t specimens a t the 1/3-octave center frequencies given i n t a b l e 8-1. occurred o r u n t i l the m a x i m u m l e v e l w a s a t ta ined.
The input l e v e l w a s increased u n t i l functional degradation
The s inusoidal sweep tes t was conducted a t leve ls specif ied by a t e s t envelop derived from data obtained i n the s inusoidal search.
A resonant frequency sweep t e s t was conducted a t l g peak from 10 t o 2000 cps. The t e s t specimens were functioned as specif ied i n 8.1.5.
8 -1 i
8.2.7
8.2.8
8.2.9
8.3.
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.3.6
8.4
8.4.1
8.4.2
8.4.3
The random exc i ta t ion t e s t w a s conducted by vibrat ing t h e speci- mens i n i t i a l l y a t 1 Grms and then gradually increasing t h e in- put l e v e l un t i l degradation occurred.
A funct ional t e s t w a s performed a f t e r t h e random exc i ta t ion t e s t .
Steps 8.2.3 through 8.2.8 were performed i n both t he X- and Y- axes.
TEST RESULTS
The output of t h e t e s t specimens, which were pressurized a t 1000 psia, was recorded on an oscillograph and monitored with a d i g i t a l voltmeter. There were indicat ions of voltage f luctua- t i o n on the oscillograph during t h e vibrat ion t e s t s , but t h e average output voltage remained unchanged and no voltage f luc- tua t ion was noted on t h e d i g i t a l voltmeter. arm cha t te r w a s t r e a t ed as specimen degradation and t he vibra- t i o n input l eve l s were reduced accordingly.
However, wiper
The tes t specimens were pressurized as specified i n 8.1.5 during t he resonant frequency sweep a t 280, 1100, and 1900 cps i n t h e X-axis and a t 300, 750, and 1600 cps i n the Y- a x i s . l i n e a r i t y of the specimens was within t h e specified tolerance.
The
The highest v ibrat ion l e v e l a t ta ined without voltage f luctuat ion during t h e random vibrat ion t e s t s was 1 . 5 G r m s i n t h e X- a x i s and 4.0 Grms i n t he Y-axis.
The specimens were out o f tolerance ( l i n e a r i t y ) during t h e functional t e s t s performed a f t e r the X- and Y-axes vibrat ion tests.
The measurements taken a t the cal ibra t ion points during t h e functional t e s t s were not a l l repeatable ( t ab le 8-9).
The m a x i m u m hysteres is of t h e t e s t specimens was less than 2.5 percent of t he output reading a t 2000 psia.
TEST DATA
The measured cal ibra t ion points obtained during the resonant frequency sweep t e s t s a re presented i n t ab l e s 8-3 through 8-6.
The calculated and measured cal ibra t ion points of the t e s t specimens obtained during t he functional tes ts a re presented i n t ab les 8-7 and 8-8. The end points recorded during t h e functional t e s t performed before the vibrat ion t e s t s were used t o calcula te the ca l ib ra t ion points.
Lineari ty of t he t e s t specimens (0 t o 1985 psig) i s shown i n f igures 8-2 and 8-3.
8-2
8.4.4 The t o t a l resis tance and wiper range o f t he t e s t specimens a r e presented i n t ab les -8-7 and 8-8.
8.4.5 Measurements obtained a t ca l ibra t ion points during the functional t e s t s which were not repeatable a r e indicated i n t ab le 8-9.
Table 8-1. One-Third Octave Center Frequencies
1/3-0ctave Bandwidth Frequencies ( CPS 1
10 12.5 16 20 25 32 40 50 62 80 100 125 160 200 250 320 400 500 630 800 1000 1250 1600 2000
Maximum Input ( g l e v e l )
1.3 2.0 3.4 5.1 8.2
13 .O 21.0 21.0 21.0 21.0 21.0 21.0 21.0 21.0 21 .o 21.0 21.0 21.0 21.0 21.0 21.0 21.0 21.0 21.0
8-3
Table 8-2. Sinusoidal Sweep Input Levels
x-Axis
Frequency ( cps )
10 to 40
40 to 200
200 to 400
400 to 650
650 to 1200
1200 to 1500
1500 to 2000
2000 to 1500
1500 to 1100
1100 to 650
650 to 400
400 to 200
200 to 40
40 to 10
Input Level
0.25-inch DA
20.0g peak
8.0g peak
18.0g peak
1.Og peak
18.0g peak
3.5g peak
3.5g peak
20 .Og peak
1.Og peak
18.0g peak
8.0g peak
20.0g peak
0.25-inch DA
Y-Axis
Frequency (cps
10 to 40
40 to 500
500 to 650
650 to 900
900 to 2000
2000 to 900
900 to 650
650 to 500
500 to 40
40 to 10
Input Level
0.25-inch DA
21.0g peak
lO.0g peak
1.Og peak
5.og peak
5*Og peak
1.Og peak
lO.0g peak
21.0g peak
0.25-inch DA
Table 8-3. Specimen 2 Lineari ty During X-Axis Resonant Frequency Sweep
.
8-5
Table 8-4. Specimen 3 Linear i ty During X-Axis Resonant Frequency Sweep
Pressure
(Pig)
0
23 5
A -.Lci!i __985
123 5
1L85
173 5
1985 -
Points Points Points Points (volts) (volts) ~ ( vol ts ) (vo l t s )
* 0.7 1, 0.7 I 0.7 I 0.7
3.9 I L.2 I 3.9 I L. 3
..
27.8 I 27.8
4
Table 8-5. Specimen 2 Linearity During Y-Axis Resonant Frequency Sweep
Pressure
(PSid
I 235
300 cps 1 750 CPS I 1600 CPS
Measured Calculated Measured Calculated Calibration Calibration Calibration Calibration
Points Points Points Points Points .
(volts) (volts) (volts) (volt a ) (volts)
7.2 I 7.5 1 7.2 1 7.5 I I
17.1 I 16.9 17.1 17 .O
27.1 I 27.1 I 27.1 I 27.1 I 27.1
Measured Calibration
pOh’lt8 (volts)
0.8
4.0
11.0
14.0
17.1 - 20.2
23.7 a J
27.1
I
,’
8-7
Table 8-6. Specimen 3 Linearity During Y-Pxi s Resonant Frequency Sweep
8-8
Table 8-7. Vibration Functional Test Data f o r Specimen 2
Calibration
* Out of tolerance
8-9
Table 8-8. Vibration Functional Test Data f o r Specimen 3
* Out of tolerance
- i .. 8-10
Table 8-9. Repeatabil i ty of Test Specimens During Vibration Functional Tests
Specimen 2
x-Axis Y-Axis
Specimen 3
K-Axis
U
U
U
U
U
S
S
U
U - Measurements not repeatable. S - Measurements were repeatable.
Y- Axis
8-11
Axes of Vibration
( f o r reference only)
Figure 8-1. Axes of Vibration
i 8-12
s 0. rl
a 2
8 a, rl
I 1 1 1 1 , I l l
I I
8 Ln rl
I
8 1 8 E rl
0 9
8 I
ol a l rl rl
I I I l l IC&
I
w I
I
u I I
s 0.
8 e
I 53 . r I 3 8
1141 I I I t i ! I I d SKHO - 83NVJSIS3X
8-13
\ \ ‘* \ \
\ \ \
a (*\
\
a cc
a CI
N
h
n
u\ I to
1 8-16
SECTION I X
HUMIDITY TEST
9.1 TEST REQUIREMFXTS
9.1.1 A humidity tes t s h a l l be performed on t e s t specimens 1 and 2 t o determine whether t h e environment causes degradation o r de te r io ra t ion of t h e specimens.
9.1.2
9.1.3
The specimens s h a l l be exposed t o t h e humidity environment f o r a period of 240 hours.
A funct ional t e s t as prescribed i n sect ion V s h a l l be performed before t h e tes t ( i f more than 72 hours has elapsed since t h e last funct ional t e s t ) and w i t h i n 1 hour a f t e r completion of t he humidity t e s t . The response t i m e port ion of t h e test may be omitted.
9.1.4 The humidity tes t s h a l l be conducted i n accordance with sect ion 12 of KS c-sm-l6k( D ) .
9.2 TEST PROCEDURE
9.2.1 A funct ional t e s t was performed p r io r t o placing t he specimens i n t he humidity chamber.
9.2.2 The t e s t specimens were placed i n t h e humidity chamber w i t h t he i n i t i a l temperature between 68 and 10O0F, uncontrolled humidity.
9.2.3
9.2.4
9.2.5
9.2.6
9.3
9.3.1
9.3.2
During t h e f irst 2-hour period t h e chamber temperature was in- creased t o 1 6 0 0 ~ and t he r e l a t i ve humidity was increased t o 95 (4, +5) percent. ta ined f o r a 6-hour period.
During t h e next 16 hours t he temperature was reduced a t a l i n e a r r a t e t o ambient while maintaining t h e 95 percent r e l a t i ve humidity.
The temperature and humidity were main-
The s teps taken i n 8.2.3 and 8.2.4 were repeated 9 times f o r a t o t a l exposure of 240 hours.
A t t h e conclusion of t he t e s t t he specimens were removed from t h e chamber and a funct ional t e s t w a s performed.
TEST RESULTS
The insu la t ion res is tance w a s greater than 20 megohms f o r a l l t e s t measurements.
Test specimen 1 w a s out o f tolerance ( l i nea r i t y ) before the humidity t es t . before and a f t e r t h e humidity t e s t .
Test specimen 2 w a s out of tolerance ( l i nea r i t y )
9.3.3 The output readings of specimen 1 were out of tolerance (re- pea tab i l i ty ) at 250 and 750 ps ia ( increasing pressure) before t h e humidity tes t and a t 250 ps ia (decreasing pressure) after t h e humidity t e s t . ps ia ( increasing and decreasing pressure) before t h e humidity tes t .
Specimen 2 w a s out of to lerance a t 250
9.3.4 The m a x i m u m hysteres is of t h e tes t specimens w a s less than 2.5 percent of t h e output reading a t 2000 psia.
9.4 TEST DATA
9.491 The calculated and measured ca l ib ra t ion points of t h e t e s t specimens are presented i n t ab l e s 9-1 and 9-2. recorded during t h e functional t e s t performed before the humidity tes t were used t o calcula te t h e ca l ib ra t ion points.
The end points
9.4.2 Lineari ty of t he specimens (0 t o 1985 psig) is shown i n f igures 9-1 and 9-2.
3.4.3 The t o t a l res is tance and wiper range of t h e specimens a re presented i n t ab l e s 9-1 and 9-2.
9-2
Table 9-1. Humidity Test ,Functional Data f o r Specimen 1
Points (ohms)
36 Out of tolerance
9-3
Table 9-2. Humidity Test Functional Data for Specimen 2
* Out of tolerance
I I
I
B 8 1 rl
I I I
I I l a I ' 3
! 9-5
\ \ \
SECTION X
SALT FOG TEST
10.1
10.1.1
10.1.2
10.1.3
10.1.4
10.2
10.2.1
10.2.2
10.2.3
10.2.4
10.2.5
10.3
10.3.1
10.3.2
10.3.3
10.3.4
TEST REQUIREMENTS
Test specimens 1 and 2 s h a l l be subjected t o a salt fog tes t t o determine t h e extent of t he degradation o r de ter iora t ion resu l t ing from t h e environmental exposure.
The tes t s h a l l be conducted i n accordance with sec t ion 17 of ‘KSC-STD-l64(D).
The salt solut ion s h a l l be a 5 percent by weight mixture and s h a l l have a pH f a c t o r of 6.5 t o 7.2. s h a l l be 95 (-4, +2)OF.
The tes t temperature
A functional t e s t as prescribed i n sec t ion V s h a l l be performed p r io r t o exposure ( i f more than 72 hours has elapsed s ince the las t funct ional t e s t ) and within 1 hour a f t e r removal from the sa l t fog environment. may be omitted.
The response time portion of t h e t e s t
TEST PROCEDURE
The t e s t specimens were inspected f o r corrosion, d i r t , and o i l y films p r io r t o the s a l t fog tes t and were cleaned before being i n s t a l l e d i n the sa l t fog chamber.
The specimens were placed i n the chamber i n a manner which would permit t h e fog t o reach a l l s ides of t he specimens without condensate dripping on them.
The specimens were exposed t o the sa l t fog environment f o r 240 hours.
A functional t e s t w a s performed according t o 10.1.4 a f t e r re- moval from the chamber.
The specimens were v i sua l ly inspected f o r r u s t and corrosion.
TEST RESULTS
The panel s ide of t he mounting flange was rusted on both specimens.
The insu la t ion res i s tance w a s g rea t e r than 20 megohms f o r a l l t e s t measurements.
Test specimen 1 w a s out of tolerance ( l i n e a r i t y ) a t one ca l i- brat ion point after the salt fog t e s t . out of tolerance before and after t h e salt fog t e s t .
Test specimen 2 was
The m a x i m u m hysteresis of t he t e s t specimens w a s less than 2.5 percent of t he output reading a t 2006 pais.
10 -1 3
10.4 TEST DATA
10.4.1 The calculated and measured ca l ibra t ion points of the t e s t specimens a r e presented in t a b l e s 10-1 and 10-2. points recorded during t h e funct ional t e s t performed before the s a l t fog t e s t were used t o calculate t h e ca l ibra t ion points.
The end
10.4.2 Lineari ty of the t e s t specimens (0 t o 1985 psig) i s shown in f igures 10-1 and 10-2.
10.4.3 The t o t a l res i s tance and wiper range of the t e s t specimens a re . presented i n t a b l e 10-1 and 10-2.
c
3 10-2
Table 10-1. S a l t Fog Test m c t i o n a l Data f o r Specimen 1
Pressure Measured Calibration Points (ohms)
Calculated Calibration Points
Before Test I After Test psia ( o b 1 Psig I t 1
I I I
I I
I I I
I I I I 1 I
I 0 1 5 1 49 I 49 49 I I I I I
I Total Resistance (ohms) I 1932 1 1926 I +t Out of tolerance
10-3
.'
Table 10-2. S a l t Fog Test Fulct ional Data f o r Specimen 2
* Out of tolerance +* Data not avai lable
10 -4 1
8 OI d d
B rl
53 a4 d rl
f-4 rl 8
8 v\ d
a cv P i 4
H le I
n d
A
4 3
.
10-5
i
I I I
a cv d
I
b E
! 10 -6
SECTION X I
SAND AND DUST TEST
11.1 TEST Ft'EQUIREMENTS
A sand and dust tes t s h a l l be performed on tes t specimens 2 and 3 t o determine i f t h e environment causes degradation o r deter io- ra t ion of t h e specimens.
11.1.1
11.1.2 The t e s t s h a l l be conducted i n accordance with sect ion 16 of KS C STD-164( D) .
11.1.3 A funct ional t es t as prescribed i n sec t ion V s h a l l be performed before the tes t ( i f more than 72 hours has elapsed s ince the las t funct ional t e s t ) and a f t e r completion of t he sand and dust t e s t . The response t i m e portion of t he test may be omitted.
11.2 TEST PROCEDUFlE
11.2.1 A functional t e s t w a s performed on t h e t e s t specimens p r io r t o the sand and dust t es t .
11.2.2 The t e s t specimens were placed i n the sand and dust t e s t chamber. The temperature w a s increased t o and maintained a t 77°F f o r a period of 2 hours.
11.2.3 A t the completion of t h e 2-hour period, the temperature w a s in- creased t o and maintained a t 1 6 0 0 ~ f o r an addi t ional 2-hour period.
11.2.4 The temperature was returned t o ambient and the specimens were removed from the chamber.
11.2.5 The sand and dust densi ty w i t h i n t h e chamber w a s maintained between 0.1 and 0.5 gram per cubic foot and the sand and dust veloci ty w a s maintained between 100 and 500 f e e t per minute.
11.2.6
11.3
11.3.1
A funct ional t e s t was performed a f t e r the sand and dust t e s t .
TEST RESULTS
Visual inspection of the t e s t specimens revealed no evidence of deter iorat ion.
11.3.2 The insu la t ion res i s tance was grea ter than 20 megohms f o r a l l tes t measurements.
11.3.3 Test specimen 2 was out of tolerance ( l i n e a r i t y ) before and after t h e sand and dust t e s t .
11.3.4 The output readings of specimen 2 were out of tolerance (repeat- a b i l i t y ) a t 0 and 235 psig (increasing pressure) and at 0 psig (decreasing pressure) a f t e r the sand and dust t e s t . Specimen 3 was out of tolerance a t 0 psig (i1,cnewing and decreasing pres- sure) before and a f t e r t h e sand and dust tes t and a t 235 psig
11-1
a f t e r the t e s t .
11.3.5 The maximum hys teres is of the t e s t specimens was l e s s than 2.5 percent of the output reading at 2000 psia .
11.4 TEST DATA
11.4.1 The calculated and measured ca l ibra t ion points of t h e t e s t speci- mens are presented i n t ab les 11-1 and 11-2. "he end points re- corded during the funct ional t e s t performed before t h e sand and dust t e s t were used t o calculate the ca l ibra t ion points.
Lineari ty of the t e s t specimens (0 t o 1985 psig) i s shown i n f igures 11-1 and 11-2.
11.4.2
11.4.3 The t o t a l resis tance and wiper range of the t e s t specimens are presented i n t ab les 11-1 and 11-2.
11-2
Table 11-1. Sand and Dust Test Functional Data f o r Specimen 2
I Total Resistance (ohms) I 1910 I 1909 1 )e Gut of tolerance
Data not avai lable
11-3
Table 11-2. Sand and Dust Test Functional Data for Specimen 3
11-4
\ \
_ . 0
I ‘ I
I I
I I
a k I mp4 I I 3 2
4 2
I
b (*\
1 I I
E I 23 m l ‘ 3 l c u R 01
c
I I I I I I I I I I I I ’I I + I I I I I 1 I , * J I I g S1910 - 33NVJISISRI
11-6 i
a cn 3
SECTION XI1
EXPLOSION TEST
12.1
12.1.1
12.1.2
12.1.3
12.1.4
12.2
12.2.1
12.2.2
12.2.3
12.2.4
12.2.5
12.2.6
12.3
12.3.1
12.3.2
12.4
12.4.1
TEST REQUIREMENTS
Test specimen 1 s h a l l be subjected t o an explosion tes t ( ign i t ion proof t e s t ) t o determine t h e explosion-producing cha rac t e r i s t i c s of t he specimens when operated i n an explosive atmosphere.
The explosive mixture s h a l l be composed of 32(-+5) percent by volume of hydrogen-in-air, and t h e t e s t chamber pressure s h a l l be 13.1 psig a t a temperature of 160
The specimen s h a l l be operated while using gaseous helium as t h e pressure
A funct ional test s h a l l be performed completed.
(-4, +2)OF.-
i n the explosive atmosphere, medium.
a f t e r t h e explosion t e s t i s
TEST PROCEDURE
The specimen was placed i n the t e s t chamber and a l l necessary e l e c t r i c a l and pneumatic systems were connected.
The temperature within the tes t chamber was s t ab i l i zed a t 1600~ and the pressure w a s decreased t o 13.1 psia.
The explosive atmosphere was injected i n t o the chamber and the i n t e r n a l pressure w a s adjusted t o 13.1 psia.
The specimen was operated through a range of 0 t o 1985 psig with 28 vdc applied t o pins A and C.
The explosive atmosphere w a s ve r i f i ed and the chamber pressure was adjusted t o 14.7 psia . Paragraph 12.2.4 was repeated.
The explosive atmosphere was ve r i f i ed and the chamber w a s purged w i t h gaseous nitrogen.
TEST FESULTS
The specimen operated successfully i n the specif ied explosive atmosphere.
The tes t specimen w a s out of tolerance ( l i n e a r i t y ) a t one ca l ibra t ion point before the explosion t e s t .
TEST DATA
The calculated and measured ca l ibra t ion points of t h e t e s t specimens a re presented i n t a b l e 12-1. during t h e functional t es t performed before t h e explosion t e s t were used t o calculate t h e ca l ibra t ion points.
The end points recorded
12-1 i
12.4.2
12.4.3
Lineari ty of the t e s t specimen (0 t o 1985 psig) i s shown i n f igure 12-1.
The t o t a l res i s tance and wiper range of the specimen a re pre- sented i n t a b l e 12-1.
12-2 i
Table 12-1. Explosion Test Functional Data for Specimen 1
Out of tolerance
12-3
0 G) o\ ri
I i I I
I
I I I
8
n d
1 12-4
SECTION XI11
CYCLE TEST
13.1
13.1.1
13.1.2
13.1.3
13.1.4
13.1.5
13.2
13.2.1
13.2.2
13.2.3
13.2.4
13.2.5
13.2.6
13 -3
13.3.1
13.3.2
TEST REQUIREMENTS
The tes t specimens s h a l l be subjected t o 80,000 cycles of operation. through t h e range of zero t o 1985 t o zero psig.
A cycle s h a l l consist of pressurizing t h e specimen
Specimens 1 and 2 s h a l l have 28 vdc applied t o pins A and C of J1. Specimen 3 s h a l l have 5 vdc applied t o t h e same pins.
The output of t he test specimens s h a l l be continuously monitored.
A functional tes t as prescribed i n sect ion V s h a l l be performed p r i o r t o t h e cycle tes t ( i f more than 72 hours has elapsed since t h e last functional t e s t ) and a t 500, 1000, 5000, 10,000, and 80,000 cycles. omitted.
The response time portion of t h e t e s t may be
A seal leakage t e s t as prescribed i n sect ion I V s h a l l be per- formed after t he cycle t e s t .
TEST PROCEDURE
The tes t setup was assembled as shown i n f igure 13-1 using t h e equipment l i s t e d i n t a b l e 13-1.
The repeat cycle timers w e r e adjusted so t ha t each cycle had a t i m e duration of 4 seconds (pressurized f o r 2 seconds, depres- surized f o r 2 seconds).
Pressure regulator 3 was adjusted t o l i m i t t h e pressure t o t he t e s t specimens a t 1985 psig.
The t e s t specimens were monitored f o r proper operation during the cycle tes t .
Functional t e s t s were performed as prescribed i n 13.1.4.
Voltage cal ibra t ion measurements were recorded on t he s t r i p chart recorders a f t e r each 10,000 cycles of operation.
TEST RESULTS
The output voltage of specimen l b e g a n t o f luc tua te a t 235 psig (increasing and decreasing pressure) after 70,000 cycles of operation.
The output voltage of specimen 2 began t o f luc tua te between 900 and 1100 psig ( increasing and decreasing pressure) a f t e r 500 cycles of operation. voltage a t zero psig. a t 985 psig (decreasing pressure) during L;ie voltage ca l ib ra t ion
After 4800 cycles there w a s no output There w a s no output voltage (open c i r c u i t )
1 13 -1
13 -3 -3
13.3.4
13.3.5
13.4
13.4.1
t e s t s performed a t 20, 30, 40, and 80 thousand cycles. The resis tance measured during the funct ional test performed a f t e r the cycle t e s t w a s within the specif ied tolerance a t zero psig and was zero (open c i r c u i t ) at 985 psig (decreasing pressure).
The output voltage of specimen 3 began t o f luc tua te between 900 and 1100 psig ( increasing and decreasing pressure) a f t e r 500 cycles of operation. There was no output voltage a t 985 psig (increasing and decreasing pressure) during the voltage c a l i- bra t ion t e s t s a f t e r each 10,000 cycles. The resis tance measured during t h e funct ional t e s t performed a f t e r the cycle t e s t was zero (open c i r c u i t ) a t 985 psig decreasing pressure.
Specimen 1 was out of tolerance ( l i n e a r i t y ) a t one ca l ibra t ion point before the cycle t e s t and a t 500 cycles and w a s out of tolerance at two ca l ibra t ion points a t 1000, 5000, and 10,000 cycles. Specimen 2 was out of tolerance a t two ca l ibra t ion points before the cycle t e s t , one ca l ibra t ion point a t 5000 cycles, and f i v e ca l ibra t ion points a t 80,000 cycles.
The m a x i m u m hysteresis of the specimens was l e s s than 2.5 percent of the output reading a t 2000 psia .
TEST DATA
The calculated and measured ca l ibra t ion points of t he specimens are presented i n t ab les 13-2, 13-3, and 13-4. The end points recorded 'during the functional t e s t performed before the cycle t e s t were used t o calculate the ca l ibra t ion points.
13.4.2 Lineari ty of the specimens (0 t o 1985 psig) i s shown i n f igures 13-2, 13-3, and 13-4.
13.4.3 The t o t a l resis tance and wiper range of the specimens are pre- sented i n t ab les 13-2, 13-3, and 13-4.
13.4.4 Out of tolerance repea tabi l i ty measurements a re presented i n t ab le 13-5.
13 -2
T-able 13-1. Q c l e Test Equipment List
- Item No.
1
-
2
3
4
5
6
7
8
9
10
11
12
13
Item
rest Specimen
;as eous Nitrogen supply .
?res sure Regulato
Pressure Gage
solenoid Valve
3olenoid Valve
Repeat Cycle Timers
% r i p Chart Recorder
Power Supply
Hand Valve
Hand Valve
Hand Valve
Hand Valve
Manufacturer
Xannini Controls Yorporation
NA
:rove
3eegers
Yarotta Valve Corp.
Ja ro t ta Valve Corp.
Indus t r i a l Timer Corp.
Westronics, Inc.
Kepco
Robbins
Robbins
Robbins
Robbins
13 -3
Model/ irt 1Jo
461319
NA
15LHX
S2170- 4000
MVlOO
MY10 9
ET-15S
I ~ ~ A T / U .
SM-36-5M
~ N A 250-
~ N A 250-
4T
4T
!NA 250- 4T
~ N A 250- 4T
Serial No.
278-8, 278-10, 278-13
NA
NA
S -1771
NA
NA
NA
llAl.220
C-40222
NA
NA
NA
NA
Remarks
Pressure Trans- h c e r
3100 p s i
3100 p s i
3-to 4000-psig -K>.l$ FS Gal date 7-1-67
3000 psi , NC
3000 psi , NC
2 seconds each
3 pens
50-vdc, 5 amp
l/L+-in.
1/4-in.
1/4-in.
l/4-in.
13 -4
Table 13-5. Repeatabili ty of Specimens During Cycle Test Functional Tests
S - Sat isfactory U - Unsatisfactory
13 -7 1
-i 00
I I
?, 1 cl
E M
ct
3 4 Fd P
0
a
f I s
< ..
Q) rl
0
.
13 -8
I I i
8 lA d
I 1 I 1 I & l I I I~~ I I I It I I I I I I n rf
I e4 Q Q tu rf
I I I i 1 1 LI I I I I I i I l l I I I I ( I I I I I 1 h
*r
3 I
s P-
I I
s LA Is, I 8
-4
8 I
I 8 cr\
a4 \
1
1 1 I I I 1 I I I 4 I I 1 1 l 1 1 l l I I I
P \o
J
rl
d
a E rt
R d
. . Ei m
e, rl
SECTION X I V
14.1
14.1.1
14.1.2
1411.3
14.2
14.2.1
14.2.2
14.2.3
14-3
BURST PRXSSURE TEST
TEST €LEQUIF?IZNEXTS
A burst pressure test shall be performed on specimens 2 and 3.
The test specimens shall not burst when subjected to a pressure of 5000 psig for 5 minutes.
Hydraulic fluid MIL-H-5606 shall be used as the pressure medium.
TEST PROCEDUlXF3
Each specimen was placed in the burst chamber and cokected to the hydraulic pressure system as shown in figure 3-1.
The pressure was increased to 5000 psig and maintained f o r 5 minutes.
The specimens were inspected f o r evidence of cracking or rupture after the test.
TEST RESULTS
There was no leakage of the specimens and no indication of internal or external
14-1
APPROVAL
TEST REPORT
FOR
PRESSURE TRANSDUCER
Giannin i Controls Corporation P a r t Number 461319
NASA Drawing Number 75M51731-8-2000
SUI3MITTED BY:
C. L. Foy Test and Evaluat i
APPROVALS
Program Supervisor
H. T. O'Bryan
R. W. Claunch
W. E. Dempster
E. 3. Dofter
J. A. Seegers
P. Perani
L. T. Scherer, Jr.
V. J. Vehko
Technical F i l e s
DISTRIBUTION
Chxysler Corporation Space Division
Test and Evaluation Section
Program Supervisor, CCSD-Michoud
Program Manager , CCSD-FO
Chief Engineer, Re l i ab i l i t y Engineering Branch
Test and Evaluation Section
Manger, Test and Evaluation Section
Manager, Data Center Section
Director, Engineering Department
Technical Information Centre
Technical Writing and Editing Group
National Aeronautics and Space Administration
Marshall Space Fl ight Center MS-IP, Bldg. 4200 API c
John F. Kennedy Space Center MD ME M J MG MH ML, M r . Fedor RC-423
Sc ien t i f i c and Technical Information F a c i l i t y P. 0. Box 33 College Park, Maryland 20740
1
1
3 1
2
I
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